diff --git a/graph_area.c b/graph_area.c
index 0ddd790..bd894c3 100644
--- a/graph_area.c
+++ b/graph_area.c
@@ -93,7 +93,7 @@ bool ui_init_graphic_stack(void *container_widget, GError *error_buffer)
         //g_printerr("[debug]     ui_init_graphic_stack() : target would be %p\n",
                    //stack_index[i].container_widget);
         if (stack_index[i].container_widget == (void *)container_widget) {
-//////////////////////////            stack_index[i].stack_id = graphics_init(&error_buffer);
+//////////////////////////           stack_index[i].stack_id = graphics_init(&error_buffer);
             //g_printerr("[debug] ui_init_graphic_stack() : stack_id is %d\n",
                        //stack_index[i].stack_id);
             if (stack_index[i].stack_id >= 0)
diff --git a/graph_stack.c.todo b/graph_stack.c
similarity index 95%
rename from graph_stack.c.todo
rename to graph_stack.c
index 6eff40d..29447b8 100644
--- a/graph_stack.c.todo
+++ b/graph_stack.c
@@ -146,12 +146,11 @@ int graphics_init(void *error_buffer)
 //////////////////////////    glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
 //////////////////////////    glEnable(GL_MULTISAMPLE);
 
-    if (!graphics_init_shaders(cur_id))
-        return -1;
+//////////////////////////    if (!graphics_init_shaders(cur_id)) return -1;
 
     //print_stack(cur_id);
 
-    graphics_init_buffers(cur_id);
+//////////////////////////    graphics_init_buffers(cur_id);
 
 //////////////////////////    glDebugMessageCallback(graphics_debug_callback, NULL);
 
@@ -287,12 +286,10 @@ dimension = 1;    //   AD HOC   (2024-06-04)
 
     /*------------------------------------------------------------------------*/
 
-    draw_space_ridges_vertex (stack_id, stack->buffer_vertex_size,
-                              space_X, space_Y, space_Z);
-    draw_space_ridges_lines (stack_id);
-    draw_grids_on_space_faces_vertex (stack_id, space_X, space_Y, space_Z);
-    draw_grids_on_space_faces_lines (stack_id, stack->buffer_lines_size,
-                                     space_X, space_Y, space_Z);
+//////////////////////////    draw_space_ridges_vertex (stack_id, stack->buffer_vertex_size, space_X, space_Y, space_Z);
+//////////////////////////    draw_space_ridges_lines (stack_id);
+//////////////////////////    draw_grids_on_space_faces_vertex (stack_id, space_X, space_Y, space_Z);
+//////////////////////////    draw_grids_on_space_faces_lines (stack_id, stack->buffer_lines_size, space_X, space_Y, space_Z);
 
     stack->buffer_vertex_0_arrow = stack->buffer_vertex_size;
     stack->buffer_colors_0_arrow = stack->buffer_colors_size;
diff --git a/init.c.todo b/init.c.todo
index 0a6c3cc..375b5ca 100644
--- a/init.c.todo
+++ b/init.c.todo
@@ -85,7 +85,7 @@ bool graphics_init_shaders(const int stack_id)
     char *vertex_shader;
     char *fragment_shader;
     int status;
-    GLuint vertex, fragment;
+    GLuint vertex = 0, fragment;  //  2024-06-05   j'initialise vertex à 0 (au pif !)
     GLuint program = 0;
     GLuint m = 0;
     GLuint v = 0;
@@ -107,7 +107,7 @@ bool graphics_init_shaders(const int stack_id)
     fragment_shader = read_file(FRAG_SHADER_FILE);
     if (fragment_shader == NULL)
         return false;
-    fragment = create_shader(stack_id, GL_FRAGMENT_SHADER, fragment_shader);
+//////////////////////////    fragment = create_shader(stack_id, GL_FRAGMENT_SHADER, fragment_shader);
 
     if(fragment == 0) {
         glDeleteShader(vertex);